Question

in an isosceles triangle if the vertex angle is twice the sum of the base angle then the measure of the vertex angle is?​

Answer 1

Answer:

120°

Step-by-step explanation:

Let the base angle be x

vertex angle = 2(x+x) = 4x

$\implies$ $x+x+4x=180$

$\implies$ $6x=180$

$\implies$ $x={\Large\frac{180}{6}}$

$\implies$ $\boxed{x=30}$

Vertex angle :

$=4(x)\\=4(30)$

$\implies$ $\boxed{120°}$

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Answer 2

Answer:

80 DEGREE

Step-by-step explanation: